I have TS-850s that I have been trying to reset for some time (its not the light in the display I have put in a new cap and it works fine ) it says in the books just hold done the A=B button but win I push the A=B button downit turns on the VFO lock win I push the F.lock button the it lock the VFO to and the top it off whine I push the frequency UP button it goes up in frequency but it locks the VFO to and unlocks it to all 3 of the buttons do the same thing were the buttons are I have put a new board X41-3140-00 J72-0060-02 and it did not help it. that why I have been trying to reset some other way to see if I can fix the radioother thin that the radio works fine if you know a way I can fix it let me know

If it's a lithium coin cell like a CR-2032 a fresh battery will be up around 3.2 volts or slightly better.

Lithium batteries have a reasonably flat discharge curve that can go for years above 3 volts. But when they slide down to 2.8 volts or less, they're not long for this world and should be replaced before the radio goes funky......

yes I did 100 times . like I said the A=B is not working I just put in the battery and thatdid not help whin I push the A=B button it make the the radio go up a band and locks the VFOthin if I push it again it unlocks the VFO and go up a band its doing 2 things at the same timeand it not working as a A=B thats why I cant get the radio to reset

with the radio powered off, hold the A=B button down and turn on the radio.

The important concept is to press and hold the A=B button while you turn on the power ON...

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yes I did 100 times

If you are absolutely doing what the book recommends and cannot get a reset, the other option is to disconnect the memory battery and allow the radio to sit idle for a day or two. Some CMOS chips can retain data for a week without power, and it's possible to glitch memory when a new battery is installed. That's why a full reset (the nuclear Armageddon option) is recommended as standard operating procedure after a battery transplant.

But... If all else fails, pulling the battery for a while can reset the radio back to factory defaults.

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